Presence of __________ in water stream are deleterious to aquatic life – McqOptions

MCQOPTIONS

1.	Presence of __________ in water stream are deleterious to aquatic life.
A.	soluble and toxic organics.
B.	suspended solids.
C.	heavy metals and cynides.
D.	all (a), (b) & (c).
Answer» E.

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